xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

fix: remove tags keyword from document

This commit is contained in:
slzhou 2023-09-04 09:50:43 +08:00
parent bbd915683b
commit 83e2e0dffd
2 changed files with 2 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
docs/en/12-taos-sql/06-select.md
View File

@ -9,7 +9,7 @@ description: This document describes how to query data in TDengine.
```sql
SELECT {DATABASE() | CLIENT_VERSION() | SERVER_VERSION() | SERVER_STATUS() | NOW() | TODAY() | TIMEZONE() | CURRENT_USER() | USER() }
SELECT [hints] [DISTINCT] [TAGS] select_list
SELECT [hints] [DISTINCT] select_list
from_clause
[WHERE condition]
[partition_by_clause]
@ -225,14 +225,6 @@ The \_IROWTS pseudocolumn can only be used with INTERP function. This pseudocolu
select _irowts, interp(current) from meters range('2020-01-01 10:00:00', '2020-01-01 10:30:00') every(1s) fill(linear);
```
### TAGS Query
The TAGS keyword returns only tag columns from all child tables when only tag columns are specified. One row containing tag columns is returned for each child table.
```sql
SELECT TAGS tag_name [, tag_name ...] FROM stb_name
```
## Query Objects
`FROM` can be followed by a number of tables or super tables, or can be followed by a sub-query.

12
docs/zh/12-taos-sql/06-select.md
View File

@ -9,7 +9,7 @@ description: 查询数据的详细语法
```sql
SELECT {DATABASE() | CLIENT_VERSION() | SERVER_VERSION() | SERVER_STATUS() | NOW() | TODAY() | TIMEZONE() | CURRENT_USER() | USER() }
SELECT [hints] [DISTINCT] [TAGS] select_list
SELECT [hints] [DISTINCT] select_list
from_clause
[WHERE condition]
[partition_by_clause]
@ -160,16 +160,6 @@ SELECT DISTINCT col_name [, col_name ...] FROM tb_name;
:::
### 标签查询
当查询的列只有标签列时，`TAGS` 关键字可以指定返回所有子表的标签列。每个子表只返回一行标签列。
返回所有子表的标签列：
```sql
SELECT TAGS tag_name [, tag_name ...] FROM stb_name
```
### 结果集列名
`SELECT`子句中，如果不指定返回结果集合的列名，结果集列名称默认使用`SELECT`子句中的表达式名称作为列名称。此外，用户可使用`AS`来重命名返回结果集合中列的名称。例如：